EP2605837B1 - Installation de gicleurs dotée d'un circuit de circulation - Google Patents

Installation de gicleurs dotée d'un circuit de circulation Download PDF

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Publication number
EP2605837B1
EP2605837B1 EP11745932.1A EP11745932A EP2605837B1 EP 2605837 B1 EP2605837 B1 EP 2605837B1 EP 11745932 A EP11745932 A EP 11745932A EP 2605837 B1 EP2605837 B1 EP 2605837B1
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EP
European Patent Office
Prior art keywords
water
main line
line
sprinkler system
flow
Prior art date
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Application number
EP11745932.1A
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German (de)
English (en)
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EP2605837A2 (fr
Inventor
Andreas Cramer
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V8 Deutschland GmbH
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V8 Deutschland GmbH
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Priority to EP11745932.1A priority Critical patent/EP2605837B1/fr
Publication of EP2605837A2 publication Critical patent/EP2605837A2/fr
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    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C35/00—Permanently-installed equipment
    • A62C35/58—Pipe-line systems
    • A62C35/60—Pipe-line systems wet, i.e. containing extinguishing material even when not in use
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
    • A62C3/002—Fire prevention, containment or extinguishing specially adapted for particular objects or places for warehouses, storage areas or other installations for storing goods
    • A62C3/004—Fire prevention, containment or extinguishing specially adapted for particular objects or places for warehouses, storage areas or other installations for storing goods for freezing warehouses and storages
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C35/00—Permanently-installed equipment
    • A62C35/58—Pipe-line systems
    • A62C35/68—Details, e.g. of pipes or valve systems
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B7/00—Water main or service pipe systems
    • E03B7/09—Component parts or accessories
    • E03B7/10—Devices preventing bursting of pipes by freezing
    • E03B7/12—Devices preventing bursting of pipes by freezing by preventing freezing

Definitions

  • the invention relates to a sprinkler system and a method for preventing water from freezing in lines of a sprinkler system.
  • Sprinkler systems are being used more and more in industry, as insurers reward the installation of such a fire protection device with a discount on the fire protection premium and thus quickly amortize the installation costs.
  • the area at risk from frost is provided with pipe trace heating when pipes are filled with water.
  • the patent US 7 221 281 B1 discloses an apparatus for detecting a flow and for measuring and regulating the flow.
  • the device comprises a flow sensor with an inlet and an outlet, a supply line and a return line.
  • the lines for supply and return are connected to one another via lines fitted with sprinklers and heat exchangers. Water is used as the flow medium.
  • the water can be fed into the sprinkler and heat exchanger lines both via a valve from a reservoir and from the returned water with the support of a pump.
  • the object of the invention is to provide an improved sprinkler system for areas of application at risk of frost.
  • This object of the invention is achieved by a sprinkler system according to claim 1 and by a method for preventing water from freezing in lines of a sprinkler system according to claim 12.
  • the sprinkler system according to the invention comprises a first main line, a second main line, a number of branch lines, each branch line fluidically connecting the first main line to the second main line, and with at least one sprinkler head attached to each branch line, as well as a sprinkler valve station that connects to the first main line connected.
  • the sprinkler system comprises a circulation unit, at least one flow line that fluidly connects an outlet of the circulation unit with at least one partial quantity supply point of the first main line, and at least one return line, the at least one partial quantity discharge point of the second main line with an input the circulation unit fluidly connects.
  • the sprinkler system according to the invention comprises a temperature sensor that measures the current water temperature of the
  • Detects water in the sprinkler system as well as a control unit which is designed to compare the measured water temperature of the water in the sprinkler system with a temperature limit value and to activate the circulation unit when the temperature limit value is undershot.
  • the water in the sprinkler system can be given a certain movement.
  • the water was at rest as long as all sprinkler heads were closed.
  • the water is set in constant motion by means of the circulation unit. The resulting movement prevents the water in the sprinkler system from freezing.
  • the sprinkler system according to the invention can also be operated in areas at risk of frost.
  • the circulation unit is activated in a manner appropriate to the situation, only when the water temperature of the water in the sprinkler system falls below a critical limit and there is a risk of the water in the system freezing.
  • the sprinkler system according to the invention is operated in a manner that saves both energy and money.
  • the antifreeze according to the invention which is implemented by means of an additional circulation circuit, increases the functionality of the
  • the sprinkler system is not impaired in the event of a fire; rather, proper functioning of the system is guaranteed even at very low temperatures.
  • the circulation unit, the at least one supply line and the at least one return line are designed to impress a flow on the water in each of the branch lines.
  • An evenly distributed flow in all pipelines of the sprinkler system reliably prevents freezing.
  • the circulation unit supplies water to the first main line and the branch lines via the at least one flow line and at the same time discharges water from the second main line via the at least one return line, a flow being impressed on the water in each branch line.
  • the circulation unit, the at least one supply line, the at least one partial quantity supply point, the at least one partial quantity delivery point and the at least one return line are designed to impress an approximately equal flow on the water in each branch line.
  • water is supplied via the at least one flow line and the at least one partial quantity supply point and water is diverted via the at least one partial quantity delivery point and the at least one return line, with an approximately equal flow being impressed on the water in each branch line.
  • each branch line is connected to the first main line and a second end of each branch line is connected to the second Main line connected.
  • Each branch line thus extends from the first main line to the second main line.
  • the circulation unit is designed to discharge a predetermined flow via the at least one return line at the at least one partial quantity discharge point of the second main line.
  • a predetermined flow is discharged by means of the circulation unit at the at least one partial quantity discharge point of the second main line via the at least one return line.
  • the circulation unit is designed to feed in a predetermined flow via the at least one feed line at the at least one partial quantity feed point of the first main line.
  • a predetermined flow is fed in by means of the circulation unit via the at least one feed line at the at least one partial quantity feed point of the first main line.
  • the sprinkler system has at least one additional main line and a number of additional branch lines, the additional branch lines fluidically connecting the at least one additional main line to at least one of the other main lines.
  • additional flow and return lines can be provided.
  • bypass lines can be provided, for example.
  • the sprinkler system comprises a control unit for controlling the circulation unit.
  • the sprinkler system comprises at least one temperature sensor which detects the instantaneous water temperature of the water in the sprinkler system.
  • the current water temperature depends directly on the ambient temperature of the sprinkler system. If the ambient temperature drops so low that the water in the sprinkler system threatens to freeze, this can be recognized by the water temperature recorded by the temperature sensor.
  • the control unit is designed to compare a measured water temperature of the water in the sprinkler system with a temperature limit value and to activate the circulation unit when the temperature limit value is undershot.
  • the water flow caused by the circulation unit in the pipes of the sprinkler system serves the sole purpose of preventing the water in the pipes of the sprinkler system from freezing. The water only threatens to freeze if the outside temperature is correspondingly low, which results in correspondingly low water temperatures.
  • the circulation unit is only switched on selectively when there is a real threat of the water in the sprinkler system freezing.
  • the circulation unit is only switched on at low temperatures in order to keep the operating costs of the sprinkler system low.
  • the circulation unit comprises a circulation pump.
  • the circulation pump is designed to deliver a predetermined amount of water per unit of time.
  • the circulation pump has a delivery rate which corresponds approximately to a delivery rate required per branch line multiplied by the number of branch lines.
  • the flow caused by the circulation pump is measured in such a way that the water is reliably prevented from freezing.
  • the circulation circuit does not serve to implement additional heating or cooling of the building sections in which the sprinkler system is installed. The only purpose of circulating the water is to keep the water in the sprinkler system from freezing. Depending on the desired operating temperature range, a relatively low delivery rate can be sufficient for this.
  • control unit is designed to compare a measured water temperature of the water in the sprinkler system with a temperature limit value and to switch on the circulation pump when the temperature limit value is undershot.
  • the circulation unit comprises a heating element which is designed to heat the water conveyed by the circulation unit.
  • the water conveyed in the circulation circuit can be heated by the heating element.
  • the control unit is designed to compare a measured water temperature of the water in the sprinkler system with a temperature limit value and to switch on the circulation pump and the heating element when the temperature limit value is undershot. In this embodiment, the circulation pump and the heating element are only switched on selectively when the water temperature is so low that there is a risk of the water freezing.
  • control unit is designed to compare a measured water temperature of the water in the sprinkler system with a first temperature limit value and with a second temperature limit value, the second temperature limit value being below the first temperature limit value, to switch on the circulation pump when the temperature limit value is not reached, and if the temperature falls below the second temperature limit, also to switch on the heating element.
  • This two-stage control of the circulation pump and heating element can reliably prevent the water in the sprinkler system from freezing in a wide range of ambient temperatures, in particular also at very low temperatures.
  • control unit is designed to switch on the circulation unit at regular time intervals for a predetermined period of time.
  • the number of partial quantity supply points and the arrangement of the at least one partial quantity supply point along the first main line as well as the number of partial quantity delivery points and the arrangement of the at least one partial quantity delivery point along the second main line are selected so that the water in each branch line has an approximately equal flow is impressed.
  • the first main line has a single partial quantity feed point which is arranged in the middle of the first main line and at which the entire flow conveyed by the circulation unit is fed.
  • At least two partial quantity delivery points are provided along the second main line.
  • the partial quantity delivery points are each arranged on the outer region of the second main line.
  • partial quantity delivery points on the outer region of the second main line have a smaller diameter than partial quantity delivery points in the center of the second main line.
  • the method according to the invention is used to prevent water from freezing in lines of a sprinkler system, the sprinkler system comprising a first main line, a second main line, a sprinkler station and a number of branch lines, each branch line fluidically connecting the first main line to the second main line, with an at least one sprinkler head is attached to each branch line, and wherein the sprinkler valve station is connected to the first main line.
  • the method comprises discharging a flow at at least one partial quantity delivery point of the second main line, feeding in a corresponding flow at at least one partial volume supply point of the first main line, and impressing flows on the water located in the branch lines.
  • Fig. 1 shows an overview of a sprinkler system according to the invention, which can be used, for example, in warehouses, factory halls, business premises, etc.
  • the sprinkler system comprises a front main line 1 and a rear main line 2.
  • the front main line 1 is fluidically connected to the rear main line 2 via a plurality of branch lines 3 to 10 arranged next to one another.
  • the in Fig. 1 In the example shown, the sprinkler system comprises eight branch lines. Any other number of branch lines can be provided depending on the individual design of the respective sprinkler system.
  • Each of the branch lines 3 to 10 is connected at the front end to a first connection point on the front main line 1, while the rear end is connected to a second connection point on the rear main line 2.
  • each of the branch lines 3 to 10 extends from a first connection point on the front main line 1 to a second connection point on the rear main line 2.
  • Sprinkler heads 11 are connected to the branch lines 3 to 10, from which the extinguishing water exits in the event of a fire in order to be able to extinguish the incipient fire in the development phase. At least one sprinkler head 11 is connected to each of the branch lines 3 to 10. The sprinkler heads 11 are attached to the ceiling or in the upper area of the side walls of the premises to be protected. Each sprinkler head 11 is closed with a glass ampoule which is filled with a colored special liquid. The glass ampoule also contains an air bubble. In a fire, the liquid in the glass ampoule heats up and expands. If the trigger temperature of the glass ampoule is exceeded, the ampoule bursts.
  • the release temperature of the glass ampoule depends on the size of the enclosed air bubble and is identified by the color of the ampoule liquid.
  • the trigger temperature is approx. 30 ° above the expected room temperature. In the event of a fire, only the sprinkler heads open when the ampoules have reached or exceeded the trigger temperature.
  • a sprinkler valve station 12 which is connected to the front main line 1 via a pipe 13.
  • the sprinkler valve station 12 comprises a check valve 14, a pressure gauge 15 and a sprinkler pump 16 which is connected to a water basin 17.
  • the water in the pipe network of the sprinkler system is under a constant pressure of, for example, 10 bar.
  • a pressure drop is recognized by the pressure gauge 15.
  • the pressure gauge 15 As soon as the system pressure falls below a predetermined limit value of, for example, 8 bar, an alarm is triggered by the sprinkler valve station 12 and the fire brigade is notified. In addition, the sprinkler pump 16 is activated.
  • the sprinkler pump 16 is a high-performance diesel-driven pump which can be designed, for example, for an output of the order of magnitude of 100 kW. This means that the sprinkler pump 16 can deliver approximately 12,000 to 20,000 liters of water per minute on the order of magnitude. If one assumes that in the event of a fire, an amount of 900 to 1000 liters of water per minute emerge from each open sprinkler head, then this means that a sprinkler pump 16 designed in this way can supply around 12 to 20 open sprinkler heads with sufficient water in the event of a fire.
  • the water basin 17 connected to the sprinkler pump 16 has a volume of, for example, 1 million liters Water. This ensures that a fire that occurs can be fought with the sprinkler system for a sufficiently long period of time. For the respective design of the sprinkler valve station 12, there are detailed regulations in which it is specified separately for each fire protection class which minimum requirements the sprinkler valve station 12 must meet.
  • the sprinkler pump 16 is switched on on the sprinkler station 12 side.
  • the water pumped by the sprinkler pump 16 is fed via the pipe 13 to the front main line 1, specifically at the front end.
  • the other end of the front main line 1 is closed by an end piece 19.
  • both ends are closed by end pieces 20 and 21.
  • the water pumped by the sprinkler pump 16 therefore reaches the exit point at the open sprinkler head 18 on two different flow paths.
  • the water in the sprinkler system is prevented from freezing by means of an additional circulating circuit which sets the water in motion in the pipeline network of the sprinkler system.
  • the circulation circuit comprises a circulation unit 24 which is equipped with a circulation pump.
  • the circulation unit 24 imposes a flow on the water in the pipelines of the sprinkler system.
  • To prevent the water in the pipelines from freezing the effect is used that moving water freezes less easily than standing water.
  • a specific flow is impressed on the water by means of the additional circulation circuit.
  • the resulting flow of water in the pipeline network can reliably prevent the water from freezing, at least in a certain temperature range.
  • the circulation unit 24 can also comprise a heating unit which heats the water taken from the pipeline network of the sprinkler system before the water is fed back into the pipeline network.
  • a certain number of partial quantity delivery points are established along the rear main line 2. Water is taken from the sprinkler system at these partial quantity delivery points.
  • the in Fig. 1 In the example shown, two partial quantity delivery points 25 and 26 are provided on the rear main line 2.
  • the first partial quantity delivery point 25 is connected to a total return line 28 via a first return line 27.
  • the second partial quantity delivery point (26) is connected to the total return line 28 via a second return line 29.
  • the water removed at the partial quantity delivery points 25 and 26 is fed to the inlet of the circulation unit 24 via the total return line 28.
  • the circulation pump of the circulation unit 24 is designed to convey a certain amount of water per unit of time and to make it available at the outlet of the circulation unit 24.
  • the delivery rate of the circulating pump is preferably dimensioned such that a flow of 40 to 50 l / min, for example, is produced in each of the branch lines 3 to 10. Such a flow is already sufficient to prevent the water in the pipes from freezing. If possible, each of the branch lines should be given an approximately equal flow.
  • the delivery rate of the circulating pump then results from the multiplication of the number of branch lines by the desired flow per branch line.
  • the in Fig. 1 The example shown shows that the delivery rate of the circulation pump should be, for example, about 320 l / min to 400 l / min.
  • the circulating unit 24 can have a heating unit which heats the pumped water as required.
  • the water conveyed by the circulation pump arrives at the outlet of the circulation unit 24 in the flow line 30. Via the flow line 30, the water is directed to at least one partial quantity supply point, which is along the front Main line 1 is arranged.
  • the in Fig. 1 In the example shown, exactly one partial quantity supply point 31 is provided, which is arranged in the middle of the front main line 1 between the branch lines 6 and 7. At this partial amount supply point 31, the entire amount of water conveyed by the circulation unit 24 is fed in.
  • the circulation unit 24 is switched on, a certain amount of water per unit of time is therefore fed in at the partial amount feed point 31, while a corresponding amount of water per unit of time is withdrawn at the two partial amount discharge points 25 and 26.
  • the partial quantity supply point 31 is arranged approximately in the middle of the front main line 1, while the two partial quantity delivery points 25 and 26 are each arranged at the outer ends of the rear main line 2. This arrangement of the partial quantity supply point 31 and the partial quantity discharge points 25 and 26 results in approximately the same flow in all the branch lines 3 to 10.
  • the number and arrangement of the partial quantity supply points and partial quantity discharge points as well as the suitable choice of the diameter of the flow and return lines can ensure that the flow of all the branch lines in the system is as uniform as possible.
  • every sprinkler system according to the invention should be designed in such a way that approximately the same flow is impressed on the water in all branch lines.
  • the circulation unit 24 is only switched on when the temperature of the water in the sprinkler system falls below a certain limit value.
  • one or more temperature sensors are provided within the pipeline network of the sprinkler system.
  • the in Fig. 1 In the example shown, a first temperature sensor 32 is attached within the first return line 27, and a second temperature sensor 33 is attached within the second return line 29.
  • the two temperature sensors 32, 33 are connected to a control unit 36 via connecting lines 34, 35.
  • the control unit 36 controls the circulation unit 24 as a function of the measured temperature.
  • the control unit 36 compares the temperature measured by the temperature sensors 32, 33 with a predetermined limit value. As soon as the predetermined limit value is undershot, the circulation pump of the circulation unit 24 is switched on by the control unit 36 so that the water in the sprinkler system is prevented from freezing. As soon as the measured temperature exceeds the specified limit value, the circulation pump is switched off again.
  • the water temperature in the sprinkler system can be recorded with the help of the temperature sensors.
  • the measured temperature can be used to determine when the water in the sprinkler system is actually threatened with freezing.
  • the measured temperature value is compared with a predetermined limit value.
  • the circulating pump of the circulating unit 24 is switched on by the control unit 36 only when the value falls below the specified limit value and there is therefore a concrete threat of the water in the pipelines freezing. By controlling the circulating pump in this way, it is achieved that a flow is selectively generated in the water of the sprinkler system only when there is a real threat of the water in the pipes freezing. Such a control of the circulation pump limits the operating costs for the circulation pump.
  • the circulation unit 24 comprises, in addition to the circulation pump, a heating unit for heating up the water conveyed by the circulation unit 24.
  • This heating unit is also controlled by the control unit 36. For example, it can be provided that, if the temperature falls below the specified limit, together with the circulating pump the heating unit is also switched on. This ensures that the circulation pump and the heating unit are only active when this is really necessary to prevent freezing.
  • two different limit temperatures can be set, a first higher limit temperature that defines the switch-on time of the circulation pump, and a second lower limit temperature that defines the switch-on time for the heating unit.
  • the circulation pump is switched on in order to impress a flow on the water in the branch pipes.
  • the heating unit is initially not switched on. Only when the measured temperature falls below the second limit temperature is the heating unit switched on in addition to the circulating pump in order to warm up the water in the sprinkler system.
  • the heating unit is switched off, and if the measured temperature then also exceeds the first limit temperature, the circulation pump is also switched off. This stepped procedure reliably prevents the water in the sprinkler system from freezing.
  • Fig. 2 shows a circulation unit 37 according to the invention, which can be implemented, for example, in the form of a switch cabinet.
  • the water coming from the sprinkler system reaches the inlet 39 of the circulation unit 37 via a return line 38.
  • An electrically operated circulation pump 40 is provided there.
  • a circulating pump 40 with a connected load of around 6 kW can be used, which pumps around 400 to 500 liters of water per minute.
  • the output of the circulating pump 40 is connected to the input of a flow heater 41.
  • the instantaneous water heater 41 can be, for example, an electrically operated instantaneous water heater which is equipped with a heating coil 42.
  • a water heater with an output of 7 kW can be used.
  • the output of the water heater 41 is connected to the output 43 of the circulation unit.
  • a flow line 44 is connected, which returns the water conveyed by the circulation pump 40 to the sprinkler system.
  • the circulation pump 40 and the water heater 41 do not serve to use the sprinkler system in addition to heating, cooling or air-conditioning the premises covered by the sprinkler system.
  • the circulation pump 40 and the water heater 41 are provided solely for the purpose of preventing water from freezing in the pipes of the sprinkler system. Since it is not about heating or cooling the room air, but only about preventing the water in the pipelines from freezing, the circulation pump 40 and the instantaneous water heater 41 can be designed for comparatively low outputs.
  • a further embodiment of a sprinkler system according to the invention is shown, and in the tables of Figure 4A and Figure 4B the results of a hydraulic calculation are shown that were used for the in Fig. 3 the sprinkler system shown has been carried out.
  • the sprinkler system from Fig. 3 comprises ten branch lines 45 to 54, each of which extends from a front main line 55 to a rear main line 56.
  • the front ends of the branch lines 45 to 54 are each connected to the front main line 55, while the rear ends of the branch lines are each connected to the rear main line 56.
  • the flow required to impress a flow is made available by a circulation unit 57, which is connected to the front flow line 58 via a flow line 58 Main line 55 is connected.
  • the flow line 58 is connected to the front main line 55 at the partial quantity feed point 59.
  • the partial quantity feed point 59 is located in the middle of the front main line 55 between the two branch lines 49 and 50.
  • the front main line 55 is thereby divided into a total of ten sections 55-1 to 55-10, which are divided into Fig. 3 Marked are.
  • FIG. 3 On the side of the rear main line 56, water is drawn from the sprinkler system and fed to the circulation unit.
  • two partial quantity delivery points 60 and 61 are provided at the outer ends of the rear main line 56. If the two partial quantity delivery points 60 and 61 are taken into account, the rear main line 56 is divided into a total of eleven sections 56-1 to 56-11. These eleven subsections of the rear main line 56 are shown in FIG Fig. 3 marked.
  • a first return line 62 is connected to the first partial quantity delivery point 60 and connects the first partial quantity delivery point 60 to the total return line 63.
  • a second return line 64 is connected to the second partial quantity delivery point 61, which connects the second partial quantity delivery point 61 to the total return line 63.
  • the water removed from the sprinkler system is fed to the inlet of the circulation unit 57 via the overall return line 63.
  • the circulation pump must be designed in such a way that it can provide a delivery volume of approx. 400 to 500 liters per minute when working against a pressure of 4.600 bar. With the help of a so-called pump curve, a suitable circulating pump can be determined for a given delivery rate and a given pressure.
  • the flow flowing to the right in the main line 55 which is illustrated by the arrows 66, drops continuously over the sections 55-5, 55-4, ... 55-1 because each of the branch lines 45 to 49 has a flow of approx. 42.9 liters per minute transported away.
  • the leftward flow in the main line 55 which is represented by the arrows 67, also drops continuously in the direction of the sections 55-6, 55-7, ... 55-10, because each of the branch lines 50 to 54 has one Flow of approx. 42.9 liters per minute carried away. Such a flow is sufficient to prevent the water in the pipelines from freezing in a certain temperature range.
  • the two partial quantity discharge points 60 and 61 are each arranged at the outer ends of the rear main line 56, so the flow rates are completely different from those of the front main line 55.
  • the flow rates Q STRANG in the different sections of the rear main line Main line 56 are in the table of Figure 4B listed.
  • the rivers transported via the branch lines 50 to 54 are discharged to the left to the first partial quantity discharge point 60.
  • At the first partial quantity delivery point 60 there is a flow of approximately 214.5 liters per minute, which is transported away via the first return line 62.
  • the flow transported away in the first return line 62 is brought together with the flow transported away in the second return line 64 and transported back to the circulation unit 57 in the total return line 63.
  • This flow in the total return line 63 is represented by arrow 70.
  • the flow in the total return line 63 that is discharged from the sprinkler system corresponds to the flow in the supply line 58 that is fed to the sprinkler system.
  • each of the branch lines 45 to 54 is impressed with an approximately equal flow of approx. 42.9 liters per minute. This corresponds to approximately one tenth of the flow supplied via the feed line 58.
  • the in Fig. 3 Example shown of a sprinkler system to divide the supplied flow as evenly as possible over the various branch lines 45 to 54.
  • an associated recirculation circuit according to the invention can be designed for a given sprinkler system, which is designed in such a way that approximately the same flow rate is produced in each branch line.
  • the number and the arrangement of the partial quantity supply points arranged along the front main line can be varied.
  • the diameter of the flow lines connected to the individual partial quantity feed points can also be varied. For example, flow lines with different diameters can be provided for the various partial quantity supply points.
  • the number and the arrangement of the partial quantity discharge points arranged along the rear main line can be varied.
  • the diameters of the return lines that are connected to the various partial quantity discharge points can be selected differently. For example, return lines to partial quantity discharge points at the outer edges of the rear main line can have a different diameter than return lines to partial quantity discharge points in the center of the rear main line. So there is an abundance of possible variations to achieve a desired flow profile.
  • the partial quantity supply takes place at a single partial quantity supply point arranged in the middle of the front main line. In this case there are no possibilities for variation on the front main line side.
  • the number and the arrangement of the partial quantity discharge points arranged along the rear main line are therefore varied.
  • the diameter of the return lines that are assigned to the individual partial quantity discharge points can also be varied. For example, it can be useful to choose differently the diameter of return lines to partial quantity discharge points in the center of the rear main line and the diameter of return lines to partial quantity discharge points on the outer edges of the rear main line.
  • the return lines of partial quantity discharge points in the center of the rear main line can be made somewhat thicker than the return lines of partial quantity discharge points on the outer edges of the rear main line.
  • a desired flow profile can usually be achieved.
  • An optimal design can be achieved with the help of Software simulations can be found which calculate an associated flow profile in the sprinkler system for a given arrangement of partial quantity supply points and partial quantity discharge points.

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  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Water Supply & Treatment (AREA)
  • Operations Research (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)

Claims (13)

  1. Installation de gicleurs, comportant
    - une première conduite principale (1),
    - une seconde conduite principale (2),
    - une pluralité de branches (3-10), chaque branche reliant fluidiquement la première conduite principale (1) à la seconde conduite principale (2), et au moins une tête de gicleur (11) étant montée sur chaque branche (3-10),
    - une station de valve de gicleur (12) reliée à la première conduite principale (1),
    - une unité de circulation (24),
    - au moins une conduite de départ (30) reliant fluidiquement une sortie de l'unité de circulation (24) à au moins un point d'amenée de quantité partielle (31) de la première conduite principale (1), et
    - au moins une conduite de reflux (27, 28, 29) reliant fluidiquement au moins un point de distribution de quantité partielle (25, 26) de la seconde conduite principale (2) à une entrée de l'unité de circulation (24), l'installation de gicleurs comportant au moins un capteur de température (32, 33) et une unité de commande (36), caractérisée en ce que l'au moins un capteur de température (32, 33) détecte la température de l'eau actuelle dans l'installation de gicleurs, et en ce que l'unité de commande (36) est conçue pour comparer la température de l'eau mesurée dans l'installation de gicleurs avec une valeur limite de température et pour activer l'unité de circulation (24) lorsque la température descend en-dessous de la valeur limite.
  2. Installation de gicleurs selon l'une des revendications précédentes, caractérisée au moins en ce que :
    - une première extrémité de chaque branche (3-10) est reliée à la première conduite principale (1) et une seconde extrémité de chaque branche (3-10) est reliée à la seconde conduite principale (2) ;
    - l'installation de gicleurs comporte au moins une conduite principale supplémentaire et une pluralité de branches supplémentaires, les branches supplémentaires reliant fluidiquement l'au moins une conduite principale supplémentaire à au moins l'une des autres conduites principales.
  3. Installation de gicleurs selon l'une des revendications précédentes, caractérisée au moins en ce que :
    - l'unité de circulation (24) fournit de l'eau via l'au moins une conduite de départ (30) à la première conduite principale (1) et aux branches (3-10) et évacue en même temps de l'eau de la seconde conduite principale (2) via l'au moins une conduite de reflux (27-29), un courant étant respectivement imprimé à l'eau dans les branches (3-10) ;
    - l'eau est fournie via l'au moins une conduite de départ (30) et l'au moins un point d'amenée de quantité partielle (31) et l'eau est évacuée via l'au moins un point de distribution de quantité partielle (25, 26) et l'au moins une conduite de reflux (27-29), un flux à peu près équivalent étant imprimé à l'eau dans chaque branche (3-10) ;
    - un flux prédéfini est évacué au moyen de l'unité de circulation (24) au niveau de l'au moins un point de distribution de quantité partielle (25, 26) de la seconde conduite principale (2) via l'au moins une conduite de reflux (27-29) ;
    - un flux prédéfini est alimenté au moyen de l'unité de circulation (24) au niveau de l'au moins un point d'amenée de quantité partielle (31) de la première conduite principale (1) via l'au moins une conduite de départ (30).
  4. Installation de gicleurs selon l'une des revendications précédentes, caractérisée au moins en ce que :
    - l'unité de circulation (24) comprend une pompe de circulation ;
    - l'unité de circulation (24) comprend une pompe de circulation conçue pour transporter une quantité prédéterminée d'eau par unité de temps ;
    - l'unité de circulation (24) comprend une pompe de circulation, qui a un débit correspondant approximativement au débit requis par branche multiplié par le nombre de branches.
  5. Installation de gicleurs selon la revendication 4, caractérisée par l'unité de commande (36), laquelle est conçue pour comparer la température de l'eau mesurée dans l'installation de gicleurs avec une valeur limite de température et pour mettre en marche l'unité de circulation lorsque la température descend en-dessous de la valeur limite.
  6. Installation de gicleurs selon l'une des revendications précédentes, caractérisée en ce que l'unité de circulation (24) comprend un élément chauffant, qui est conçu pour chauffer l'eau transportée par l'unité de circulation (24).
  7. Installation de gicleurs selon la revendication 6, caractérisée par l'unité de commande (36), laquelle est conçue pour comparer la température de l'eau mesurée dans l'installation de gicleurs avec une valeur limite de température et pour mettre en marche l'unité de circulation et l'élément chauffant lorsque la température descend en-dessous de la valeur limite.
  8. Installation de gicleurs selon la revendication 6, caractérisée par l'unité de commande (36),
    laquelle est conçue pour comparer la température de l'eau mesurée dans l'installation de gicleurs avec une première valeur limite de température et avec une seconde valeur limite de température, la seconde valeur limite de température étant inférieure à la première valeur limite de température, pour mettre en marche la pompe de circulation lorsque la température descend en-dessous de la première valeur limite, et pour mettre en marche en plus l'élément chauffant lorsque la température descend en-dessous de la seconde valeur limite.
  9. Installation de gicleurs selon l'une des revendications précédentes, caractérisée en ce que la première conduite principale (1) comporte un seul point d'amenée de quantité partielle (31) disposé au centre de la première conduite principale, au niveau duquel la totalité du flux transporté par l'unité de circulation (24) est alimentée.
  10. Installation de gicleurs selon l'une des revendications précédentes, caractérisée au moins en ce que :
    - au moins deux points de distribution de quantité partielle (25, 26) sont prévus le long de la seconde conduite principale (2) ;
    - les points de distribution de quantité partielle (25, 26) sont prévus chacun sur la zone extérieure de la seconde conduite principale (2).
  11. Installation de gicleurs selon l'une des revendications précédentes, caractérisée en ce que les points de distribution de quantité partielle sur la zone extérieure de la seconde conduite principale (2) ont un diamètre plus petit que les points d'amenée de quantité partielle au centre de la seconde conduite principale.
  12. Procédé pour empêcher l'eau de geler dans les conduites d'une installation de gicleurs selon l'une des revendications 1 à 11, le procédé comprenant :
    - l'évacuation d'un flux à au moins un point de distribution de quantité partielle (25, 26) de la seconde conduite principale (2) ;
    - l'alimentation d'un flux correspondant à au moins un point d'amenée de quantité partielle (31) de la première conduite principale (1) ;
    - l'application de courants à l'eau se trouvant dans les branches (3-10).
  13. Procédé selon la revendication 12, caractérisé en ce qu'approximativement le même flux est imprimé à l'eau dans chaque branche.
EP11745932.1A 2010-08-19 2011-08-12 Installation de gicleurs dotée d'un circuit de circulation Active EP2605837B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11745932.1A EP2605837B1 (fr) 2010-08-19 2011-08-12 Installation de gicleurs dotée d'un circuit de circulation

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP10008672 2010-08-19
PCT/EP2011/004068 WO2012022452A2 (fr) 2010-08-19 2011-08-12 Dispositif de gicleurs d'incendie comportant un circuit de circulation
EP11745932.1A EP2605837B1 (fr) 2010-08-19 2011-08-12 Installation de gicleurs dotée d'un circuit de circulation

Publications (2)

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EP2605837A2 EP2605837A2 (fr) 2013-06-26
EP2605837B1 true EP2605837B1 (fr) 2020-10-21

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WO (1) WO2012022452A2 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3939914A (en) * 1972-11-17 1976-02-24 Carroll John L Combination air conditioning and fire protection system for a building
DE2345380C3 (de) * 1973-09-08 1980-07-31 Walther & Cie Ag, 5000 Koeln Naß-Sprinkleranlage für große Tiefkühlhäuser
US5183102A (en) * 1991-11-15 1993-02-02 The Montana Power Company Heating and cooling system
US6914531B1 (en) * 1998-06-17 2005-07-05 Richard Young Apparatus for flow detection, measurement and control and method for use of same
FI20060400L (fi) * 2006-03-06 2007-09-07 Marioff Corp Oy Menetelmä ja laitteisto suihkutuslaitteistossa

Non-Patent Citations (1)

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EP2605837A2 (fr) 2013-06-26
WO2012022452A3 (fr) 2012-05-10
WO2012022452A2 (fr) 2012-02-23

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